Lub instantaneous flow ntawm lub electromagnetic flowmeter yog ib txwm 0, dab tsi yog qhov teeb meem? Yuav daws li cas?
Electromagnetic flowmeter yog tsim rau cov xov xwm conductive. Pipeline xov xwm yuav tsum tau sau nrog cov yeeb nkab ntsuas. Nws yog tsuas yog siv nyob rau hauv lub Hoobkas dej phwj, dej phwj hauv tsev, thiab lwm yam.